Sand-handling apparatus.



No. 783,384. PATENTED FEB. 21,1905.

7 W. J. PATTERSON.

SAND HANDLING APPARATUS.

APPLIOATION FILED MAR. 26, 1904.

3 SHEETS-SHEET 1.

INVENTOR PATBNTED FEB. 21, 1905.

W. J. PATTERSON. SAND HANDLING APPARATUS.

APPLICATION FILED MAR. 26, 1904.

a sums-sum 2.

WITNESSES No. 783,384. PATENTED FEB. 21, 1905. W. J. PATTERSON.

SAND HANDLING APPARATUS.

APPLIOATION. FILED M.A1L26. 1904.

3 SHEETS-SHEET 3.

wn'ruessssz INVEN OR Patented. February 21, 1905.

PATENT FFICE.

WVILLIAM J. PATTERSON, PITTSBURG, PENNSYLVANIA.

SAND-HANDLING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 783,384, dated February 21,1905.

4 Application filed March 26, 1904. Serial No. 200,209.

To (LI/Z whom, it may concern:

Be it known that 1, WILLIAM J. PATTERSON, a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Sand- Handling Apparatus, (Case No. 2;) and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to apparatus for handling sand or other material, and more especially for use in connection with foundry plants. V

The chief object of my invention is to provide a simple form of apparatus by means of which the sand may be taken from the molding-floor of a foundry and elevated to and introduced into a suitable device to be discharged therefrom into position to be used for remolding.

My invention comprises, generally stated, a traveling bridge or frame and a swinging elevator-frame mounted on said bridge and provided with means for conveying the sand from the foundry-floor to a point above to be discharged therefrom into devices arranged along the foundry-floor below said bridge and mechanism for withdrawing said elevator up out of the way whennot in use. I

To enable others skilled in the art to make and use my invention, I will describe the same more fully, referring to the accompanying drawings, in which I Figure 1 is a front view of apparatus embodying my invention. Fig. 2 is a plan view thereof. Fig. 3 is an end view. Fig. 1 is an enlarged view of upper portion of elevatorframe. Fig. 5 is a plan view of same. Fig. 6 is an enlarged end view of the screen and mechanism for driving same. Fig. 7 is a sectional elevation of screen. Fig. 8 is a section on line 8 8, Fig. 7; and Fig. 9 is an enlarged sectional view of one of the clutches.

In the drawings the invention is illustrated in connection with a foundry or molding-room, which is composed of a suitable structure having the side Walls 2 and the floor 3. On the side walls 2 are the shelves or brackets 4, having the I-beams 5 secured thereto, upon which are laid the rails 6. These rails 6 form the track for the traveling bridge or frame 7,

which may be made up of beams of suitable construction properly braced by cross-beams.

The shaft 8 extends from one end of the frame to the other and is supported in suitable bearings within said bridge. This shaft 8 is driven by a suitable motor 10, carried by the bridge, the pinion 10 of said motor meshing with the gear-wheel 10 on said shaft. Adjacent to the ends of said shaft 8 are the pinions 8, meshing with the gear-wheels 8 on the shaft 8, which has the wheels 9 mounted thereon, which run on the rails 6.

A shaft 11 is mounted in suitable bearings in the frame, said shaft being connected up to the motor 12 and driven thereby, the motorshaft 13 having the pinion 1 1 meshing with the gear-wheel 15 on the shaft 11. A pinion 15 meshes with gear-wheel 15 on shaft 11. The shaft 11 is provided with suitable clutch mechanism 16, which connects said shaft up to the shafts 17 and 18. This clutch mechanism com prises the disks 16 and 16, connected by bolts 16 and operated by toggle 16, connected to the sliding collar 17 on the shaft 18. A sleeve 11 is splined to shaft 11, and secured to said sleeve is the friction-disk 11 interposed between disks 16 and 16. It is apparent that by operating sliding collar 17 a the shaft 18 may be thrown into and out of connection with shaft 11. The shafts 17 and 18 have the bevel-gears 19, meshing with the bevel-gears 20 on the shafts 21.

As the parts about to be described are duplicated at each end of the bridge, the singular number will be used in describing the parts. The bevel-gear 20 meshes with the bevel-gear 22 on the shaft 23, the outer end of said shaft carrying the sprocket-wheel 9. Mounted on the upright 23 are the sprockets 2 1, over which pass a suitable sprocket-chain 24E, engaging with the sprocket-wheel 25 on the shaft 26 of the rotary screen 27 and with the sprocket-wheel 9 This rotary screen may be of any suitable construction, and as it is a common form of device further description of the same is not deemed necessary.

On the shaft 21 is the sprocket-wheel 28, which is connected up by the chain 29 to the sprocket-wheel 30 on the shaft 31. Mounted on the shaft 21 on-one side and upon the short the shafts 45.

shaft 32 on the opposite side is the swinging elevator-frame 33. This elevator-frame 33 has the quadrants-34, with toothed faces, and

has at the lower end the hopper 38, into whicl the sand from the foundry-floor is introduced. Journaled within this hopper 38 are the wheels 39, around which the belt 40 passes, said belt passing around the wheels 41 at the top of the elevator-frame mounted on the shaft 31. I The belt 40 is provided with suitable buckets 40. Power is thus transmitted from the/motor 12 to the elevator for operating the same, as well as to the revolving screen, all as above described.

In order to provide for the tilting of the elevator-frame, the motor 42 is provided, said motor being connected up to drive the shaft 43, said shaft being provided with suitable clutch mechanism 44 to connect said shaft to The shaft 45 has the worm 46, engaging-with the worm-wheel 47 on the shaft 48. This shaft 48 has the pinions 49, which mesh with the rack-faces of the quadrants 34.

The elevator-frame is provided with a suitable hood 50, having the discharge-spout 51, said discharge-spout in the normal position of the elevator-frame being adapted to discharge the material raised by the elevator into the trough 51, within which is the spiral conveyer 51, mounted on the shaft 26. A watersupply pipe 51, controlled by suitable valve, admits water to the trough 51. In this manner the sand is tempered-before it passes into the screen.

Arranged at suitable intervals at-the side of the foundry on the foundry-floor are the frames 52, having the hoppers 53 supported therein, said hoppers being provided with slides 54 for opening and closing the lower ends of said hoppers. The molding-machines are mounted upon suitable platforms in line with the hoppers, so that when the sand is delivered into said hopper and the slide withdrawn the sand will be discharged into the molds.

When my improved apparatus is in operation, the sand on the foundry-floor is shoveled. or otherwise introduced into the hopper 38 at the lower end of the elevator-frames, whereupon the power being applied through the connections from the motor 12 for operating said elevator and the rotary screen the sand is lifted by the elevator-buckets 40 from the hopper 38 and discharged through the spout 51 into the screen. The sand is revolved within the screen in such manner as to properly separate it, and the sand thus separated passes into the hopper 53, over which the revolving screen has been brought by means of the bridge 7 being moved along the tracks 6 by the motors, so as to be in proper position with reference to said hopper 53. The sand passes down through the hopper 53 and when the slide 54 is removed is deposited into the mold below until the proper quantity has been introduced, whereupon the slide 54 is returned to position. The tailings or pieces of iron, lumps, or other large pieces work toward the open end of the screen and pass through the spout 60 to a point below and away from the sand. The bridge is then moved onto the next mold-stand, and. in this manner the mold-stands arranged along the foundry are successively supplied with the proper amount of sand.

While I have described my invention as supplying the sand along one side of the foundry, it is apparent that the other side may be in operation at the same time and operated by the same set of motors. It is also apparent that owing to the clutch mechanism on the power-shafts only one elevator may be operated at a time, if so desired.

When it is desired'ito have the found ry-floor clear and unobstructed by the elevators, power may be applied to the motor 42, which through the connections described will drive the pinions 49, and said pinions meshing with the quadrants 34' will act to raise the elevatorframes up to the positions shown in dotted lines in Fig. 1. In this position the elevators are up out of the way and the foundry-floor is unobstructed when the elevators are notin actual use. The elevators may, however, be quickly lowered into position for use at any time. The elevators may be raised and lowered independently of each other, owing to the clutch mechanism described, and one may be in operation while the other is swung up out of position.

What I claim is 1. In apparatus for the handling of sand, or like material, the combination with a suitable support, of an overhead traveling bridge supported by said support, a screening device, means for lifting the material and discharging same in position for reuse in molding, and a series of hoppers arranged at intervals below said bridge and in the line of travel of said screening device.

2. In apparatus for the handling of sand, and like material, the combination with a suitable support, of an overhead traveling bridge supported at each end by said support, swinging elevator-frames with elevating means carried thereby in proper position on said frame to deliver material to each end of said bridge able support, of an overhead traveling bridge carried by said support, a screen carried by said bridge, an elevator extending down from said bridge, a trough connecting said elevator with said screen, and means for conveying the sand along said trough into said screen.

4:. In apparatus for the handling of sand, or like material, the combination with a suitable support, of an overhead traveling bridge supported by said support, a screen carried by saidbridge, an elevator extending down from said bridge, a trough connecting said elevator with said screen, and a spiral conveyer in said trough.

5. In apparatus for the handling of sand, the combination with a suitable support, of an overhead traveling bridge supported by said support, a screen carried by said bridge, an elevator extending down from said bridge, means for dischargingthe material lifted by said elevator into'said screen, and means for tempering the material previous to its discharge into said screen.

6. In apparatus for the handling of sand, the combination with a suitable support, of an overhead traveling bridge supported by said support, a screen carried by said bridge, an elevator extending down from said bridge, a trough leading from said elevator to said screen, a spiral conveyer in said trough, and a water-supply pipe leading to said trough.

7. In apparatus for the handling of sand, the combination with a suitable support, of an overhead traveling bridge supported by said support, a rotary screen carried by said bridge, an elevator, atrough leading from said elevator t0,said screen, and a spiral conveyer in said trough mounted on an extension of the screen-shaft.

In testimony whereof I, the said WILLIAM J. PATTERSON, have hereunto set my hand.

WILLIAM J. PATTERSON.

Witnesses:

ROBERT C. TorTEN, Gr. KREMER. 

